editorconfig-core-handle.el: Don't use file names as glob pattern

editorconfig-core-handle.el: Don't use file names as glob pattern

Match relative file names against the glob pattern instead of
trying to construct a glob pattern that matches the absolute
file name (where the code failed to escape the possible
special chars).

* lisp/editorconfig-core-handle.el
(editorconfig-core-handle-section-get-properties): Delete `dir` arg.
(editorconfig-core-handle-get-properties-hash)
(editorconfig-core-handle-get-properties): Adjust call accordingly.
Use `declare` to mark it obsolete.
(editorconfig-core-handle--fnmatch-p): Delete `dir` arg.